Accession Number : AD0778418

Title :   Some Basic Image Degradation and Enhancement Techniques.

Descriptive Note : Interim rept.,

Corporate Author : MARYLAND UNIV COLLEGE PARK COMPUTER SCIENCE CENTER

Personal Author(s) : Weszka, J. S. ; Carton, E. J. ; Verson, J. A. ; Mohr, J. M. ; Rosenfeld, A.

Report Date : DEC 1973

Pagination or Media Count : 22

Abstract : The report documents a collection of basic techniques for degrading or enhancing images. Included are blurring by averaging or iterated averaging; deblurring by contrast stretching, histogram flattening, and combination of the Laplacian with the original image; addition of noise; removal of periodic noise by selective spatial frequency filtering, and of 'salt and pepper' noise by selective local averaging; and object extraction by 'semi-thresholding.' Examples of the results obtained using these programs are given. (Author)

Descriptors :   *IMAGE PROCESSING, RESOLUTION, DEGRADATION, NOISE.

Subject Categories : Cybernetics
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE